PROVN OF CHILLED WATER TYPE CENTRAL AC PLANT FOR RCC SHED AT AF STN GWALIOR

Amount

WATER-COOLED SCROLL TYPE CHILLER UNIT (2W + 1S) Design , Supply, Installation, Testing & Commissioning of water cooled scroll chiller units having minimum capacity not less than 50 TR water cooled Inverter scroll Chilling Machines fitted with hermetically sealed compressors, multi circuit Dx chiller,water cooled S&T condenser, Microprocessor based control panel,suitable for R-407 C or any other non-CFC/ non-HCFC gas Refrigerant, Shell & Tube Insulated Evaporator, Expansion Device, suitable capacity control mechanism actual Cooling capacity on following Operation Parametres min 3 star rating chilling units Complete as per specifications and design data mentioned in Annexure - A and detailed layout plan of ground and first floor of building to be air conditioned (Make : BLUE STAR / DAIKIN / CARRIER/YORK/VOLTAS) SPECIFICATIONS Mode of operation: Auto/Manual Single Phasing Protection Compressor Restart Protection 10- Sec Time Delay between System Short Circuit Protection 5 deg C - Anti Freeze Protection Display on Micro control indicating compressor on, Crankcase Heater ON/Off Entering / Leaving water Temp with digital identification Refrigerant: R-407c or any other non-CFC/ non-HCFC gas, Actual capacity as per Ambient condition Scroll Chiller Unit shall be suitable for 415 V + 10%, 50 HZ , 3 Phase Ac Supply. Chilled water Inlet Temp. 12.17˚ C ,Chilled water outlet Temp. 6.67˚C Fouling Factor: 0.0001 MKS Condenser water Inlet Temp. 36.2 ˚C Condenser water outlet Temp. 32.4˚C Maximum allowable IKW/TR @100% load : 1.55

Scope of Supply (i) 1set.- Scroll compressor hermetic complete with suitable capacity squirell cage induction motor with class 'F' insulation suitable for operation on 415 + 10% volts Inputs, 50Hz, A.C. supply and automatic capacity control, safety switches, forced feed lubrication system etc. as per OEM specifications. (ii) 1No. Close transition type automatic star-delta starter suitable for compressor motor complete with ammeter with CTs, over load protection, under voltage protection, protection against phase reversal & independent single phase preventors etc. complete as required. (iii) 01 Set - Lubrication device consisting of automatic electric oil pump, oil cooler, oil strainer,automatic pressure regulating valve, oil heater, oil heater thermal switch etc. as per OEM specifications. (iv) 01 Set. - Matching Water Cooled condenser having Copper tube with Mechanically bonded aluminium fins. (v) 01No. - Matching DX type chiller for Chiller units (vi) 01 Lot- Refrigerant piping fittings, valves and accessories to interconnect compressor, condenser, chiller and expansion valve. (vii) 01 Set- Microprocessor based control panel complete with all safeties, controls and LCD display as per OEM specifications. (viii) 01 Lot- Refrigerant line accessories comprising of safety valves, angle valve, liquid line indications. (ix) 01 Lot- Water flow switches at inlet and outlet of chiller. Water drain and air purge valves whenever required. (x )01 Lot- Suction line and chiller insulation with minimum 19mm thick polyvinyl nitril rubber insulation complete as required. (xi) Frame work for mounting the above condenser, chiller compressor and motor with base plate complete with anti vibration pads/springs as per OEM specifications (xii) Initial / first charge of refrigerant gas and compressor oil. (xiii) 1 No. Chilled water flow Switch of suitable size and capacity (xiv) PCC cement concrete foundation for the Chiller unit as per OEM specifications

Note : - (i) Complete Chiller system shall comprises of not less than 100TR capacity ( 02Nos. Working Each 50 TR) + 01 Standby 50% capacity of chiller unit (ii) The rate shall be inclusive of Designing of Complete AC plant. Contrtactor shall submit the detailed Design & complete working drawing of AC plant including heat load calculationa, plant layout, Air distribution network layout, electrical panel details dully vetted by IIT / NIT (Relevant department). Certificate of sound design shall be on official letter pad of IIT / NIT. Complete set of design of drawing shall be submitted for approval of Accepting Officer within 01 Months from date of commencement of work as per Work order No. 1 (iii) The completion of the work shall be issued in phased manner. Provisional completion of the work shall be issued After physical execution of the work at site complete in all respect/ phase I test as specified. (iii) The Phase -II ( summer / mansoon / winter ) Tests shall be carried out by Sr IEM HQ CE (AF) Prayagraj Zone / Rep of Accepting Officer. (iv) The Defect liability period of the contract shall be start as per condition 46 of IAFW 2249 General condition of contract (24 Months after the provisional completion of work under phase-I)

Chilled Water Pump Set Supply, installation, testing & commissioning of centrifugal pump sets, factory assembled & tested for rated efficiency complete with motor & common base frame, coupling guard, aluminium cladded insulation etc. for re-circulation of chilled water for the air conditioning system ( CHILLED WATER PUMPSET ) . The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply complete all as specified and directed by Engineer-in-charge. Make ( 01 NOS WORKING + 01 NO- STANDBY) The pump characteristic of centrifugal pump set shall be as follows: a. Water quantity min 300 US GPM b. Static Head 30 M c. Impeller Bronze. (i) 1 No.- mono block type pump (ii) 1 No. - Suitable HP TEFC squirell cage EE4 induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply. (iii) Lot- insulation of pump of 13 mm thick with aluminium foil faced closed cell chemically crossed linked XPE foam material. (iv) 2 Nos. -100 mm dia dial type pressure gauges. (v) Lot- Mounting frame with Anti vibration pads. (vi) Lot-PCC cement concrete foundation for the pump unit Note: Plant shall be design for overall capacity for 1 working & 1 standby---Each of 100% capacity.

Condenser Water Pump Set Supply, installation, testing & commissioning of centrifugal pump sets factory assembled & tested for rated efficiency complete with TEFC motor mounted on common base frame, coupling guard, etc. for re-circulation of condensed water from cooling tower to condenser for the air conditioning system ( CONDENSER WATER PUMPSET ). The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply all as specified and directed by Engineer-in-charge. ( 01 NOS WORKING + 01 NO- STANDBY) The pump characteristic of centrifugal pump set shall be as follows: a. Water quantity min 400 US GPM b. Static Head 22 M c. Impeller Bronze (i) 1 No.- mono block type pump (ii) 1 No. - Suitable HP TEFC squirell cage EE4 induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply. (iii) 2 Nos. -100 mm dia dial type pressure gauges. (iv) Lot- Mounting frame with Anti vibration pads. (v) Lot-PCC cement concrete foundation for the pump unit Note: Plant shall be design for overall capacity for 1 working & 1 standby---Each of 100% capacity.

Hot Water Pump Set Supply, installation, testing & commissioning of centrifugal pump sets, factory assembled & tested for rated efficiency complete with motor & common base frame, coupling guard, aluminium cladded insulation etc. for re-circulation of chilled water for the air conditioning system ( HOT WATER GENERATOR ) . The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply complete all as specified and directed by Engineer-in-charge. Make ( 01 NO WORKING + 01 NO- STANDBY) The pump characteristic of centrifugal pump set shall be as follows: a. Water quantity 120 US GPM b. Static Head 30 M c. Impeller Bronze. (i) 1 No.- mono block type pump (ii) 1 No. - Suitable HP TEFC squirell cage EE4 induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply. (iii) Lot- insulation of pump of 13 mm thick with aluminium foil faced closed cell chemically crossed linked XPE foam material. (iv) 2 Nos. -100 mm dia dial type pressure gauges. (v) Lot- Mounting frame with Anti vibration pads. (vi) Lot-PCC cement concrete foundation for the pump unit Note: Plant shall be design for overall capacity for 1 working & 1 standby---Each of 100% capacity.

AIR HANDLING UNITS Supply, installation, testing and commissioning of not less than 26000 CFM @ 750 Pascal total static pressure double-skin type horizontal, floor-mounted, top / side discharge air handling unit having thermal break profile complete with air-tight casing using gaskets and self-adhesive tapes 0.8 mm thick pre-coated outer skin and 0.6 mm thick GI inner skin, 45±2 mm thick double skin panel with pressure injected CFC/HCFC free PUF having 'k' value of 0.02 W/°C/m & density 40 kg/m³, AMCA certified energy efficient plug fan(s) with backward curved impellers for high static pressure mounted on aluminium extruded side rail base frame with VFD, EU4 pre-filter and EU7 fine filter (mounted on a common frame), combination of 6/8 rows deep chilled water coil(s) and Hot water coil(s) of suitable high capacity (IE3) TEFC squirrel cage flame proof induction motor, PVC/nylon hinges & handles, view port and marine lamp, limit switch, SS-304 drain pan, vibration isolators/rubber pads (minimum 1" thick) inspection windows / doors, mixing box and supply / return / fresh air openings fitted with aluminium volume control dampers, thermostat & humidistate,etc. complete all as specified and directed by the engineer-in-charge. The AHU shall comprise of the following: [i] Suitable SISW backward curved plug fan, dynamically balanced, with AMCA certified blower [ii] Flame proof foot mounted (B3 construction) 3-Phase squirrel case induction motor 415 V ± 10%, 50 Hz ± 5 %, combined variation ±10%, insulation class F with temperature rise limited to class B, degree of protection IP 55, duty 51, ambient temperature 45 ºC, conforming to IS 12615: 2011, IS/IEC 60079-1: 2007, IS 3682: 1966 gas group II A, II B [iii] Flexible connection made with air tight ASTM E84 (Class I) polyester fire retardant cloth riveted on periphery of cloth with extruded aluminium 'L' angle flange as per fan size at discharge duct/plenum [iv] Washable type of 'EU4' filter (pre-filter, efficiency 90% down to 10 micron) and 'EU7' filters (Micro Vee filters, efficiency 99% down to 3 micron)

Supply, install, commissioning and testing of flame proof commercial Air curtain unit of size (1500X365X330mm) for prevention of dust and conditioned air losses, single phase, 220 V, 50 HZ, made out of MS/CRCA sheet of minimum thickness 18 gauge finished with two coats of red oxide primer and final coat of synthetic enamel paint (oven baked) with MS - CRC 18 gauge square perforated suction grills, Aluminium alloy fans and single phase electric motor, nozzles etc, complete with fittings and accessories so as to produce 1 - 1.5 m/sec air velocity at floor level for door opening as specified.

Electric Hot Water Generator Supply, installation, Testing & Commissioning of Electrically operated HOT WATER GENERATOR of capacity not less than 130 KW made up of 8 mm MS sheet and dishend made of 10 mm MS sheet stainless steel lining with heaters arranged in banks and auto controller and Thermostat so that required quantity of hot water is generated at 50 degree Celcius with nominal variation including 100 mm thick resinbond fiber glass insulation of 24 kg/CUM density finished with 1.25 mm thick aluminium sheet cladding including necessary electrical control panel with automatic control panel. HWG shall be provided with inlet and outlet water connections complete with pressure release valve, low level cutout, Auto-vent sight -glass all as per specifications as required at site. The HWG shall confirms to protection IP-52 with IS 2147 includign installation of automatic RH controller to achieve design condition automatically complete with required capacity of make up water tank for functioning of HWG.

Supply, installation, testing and commissioning of floor mounted ultra sonic (Mist) Humidifier capacity 60 LPH made out out of 1.5 mm thick stainless steel sheet 304 grade water storage tank, wall mounted electrical panel constructed in 18 gauge CRC sheet including control wiring from panel to Humidifier, SMPS based power supply, contactor, MCB, Relay card, connectors, on/off switch with indication, auto drain system, Humidity controller for auto/mannual operation of humidifier, control wiring with suitable sensor from ducts outlet complete all as per OEM instruction. Make : Rapid cool, Modle No RM-60 or equivalent.

COOLING TOWER Supply, Installation, testing and commissioning of FRP cooling tower of not less than 125 TR heat rejection capacity with FRP water basin PVC fillings with CTI manufacturer integral louvers and drift eliminators complete with hot water basin either fitted with spray nozzles or having self rotating sprinklers, statically & dynamically balanced axial flow type fan direct driven or driven through reduction gear box with TEFC induction motor, water proof, IP 55 with canopy headed, suction screen, make up quick filling arrangement, over flow and drain connections with necessary valves and suitable inspection ladder from ground level, access arrangement for cooling lower interior, installed on MS girders (MS-I sections) fixed in masonry foundations with cement concrete footing, second class brick work and cement mortor1:6; all accessories, basin fittings, fan, fan motor suitable for 415 Volt supporting structure, anti vibration mountings etc. complete and with following technical data. (One working and one standby) (i) Water flow/tower 480 USGPM (ii) Ent. Water Temp. 97 °F (iii) Basin water Temp. 90 ˚F

MOTOR CONTROL PANEL FOR AC PLANT Supply, fixing, testing and commissioning factory fabricated cubicle type MV panel consisting of the 3 phase, 415 volt, 35 MVA rupturing capacity made of 2 mm thick CRCA sheet powder coated conforming to IP-54, including interconnection wiring, indicating lamps etc. The cubicle panel shall be free floor standing type, complete with interlocking arrangement & earth bus. The panel shall have compartmentalized arrangement to accommodate one feeder in each compartment. A vertical cable alley of suitable width shall be provided to serve one or two vertical feeder sections. Also the openings between the busbar chamber and the feeder section shall be shrouded with Bakelite/hylam sheet with minimum 3 mm thickness. All the hardware used in fabrication of panel shall be galvanized with zinc passiveness.

ELECTRICAL CABLES S& F in ground/ in ducts/in pipes/on cable trays of following PVC insulated aluminum/copper conductor armoured cables of 1.1 KV grade confirming to IS complete with cable tray, clamps, saddles etc, including effecting proper connection to the equipment all as required and specified:- Notes:- (i) The cost includes cost of of suitable pipes for cable protection at road crossings, cable trays, protective bricks, sand and excavation. (ii) All exposed cables in trenches/wall/ceiling/roof trusses shall be provided with silicon based fire resistance coating compatible for PVC cables. (iii) All terminations shall be made with proper lugs in the approved manner

3.5 C x 120 Sq.mm (aluminum) for Chillers & Hot Water Generator.

3.5 C x 35 Sq.mm (aluminum) for main to AHU Panels and humidifiers.

3C x 10 Sq.mm (alumunum) for Chilled Water , Condenser pumps, Hot water Pump, CT Fan & AHU Blowers motors

4C x 1.5 Sq.mm (copper) For Controls

Supply & fixing in possition the powder coated cable trunking of the following sizes for supporting 1100 Volts grade armoured/ unarmoured aluminium/ copper conductor cables, fabrication from angle and perforated 2mm thick M.S. CRCA sheet with expansion coupler plates duly galvanised, corner, elbow etc, with bolts, washer and nuts, knock out holes for cable connections as per approved disign, including mounting arrangment of cable tray to wall / floor with suitable size angle iron/ flat iron / pipe support. The tray shall comply with the specification of NEC (National Electric Codes) and NEMA ( National Electric Manufacturers Association) the steel shall be as per IS: 226 and galcanising as per IS: 2629/BS 729/ASTM 123.

300 mm wide x40 mm wall height cable tray

150 mm wide x 40mm wall height cable tray

100 mm wide x 40mm wall height cable tray

EARTHING M & L earthing complete with Galvanized steel earth electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.25 Mtr deep below normal ground level) with top edge of earth electrode not less then 1.5 Mtr below normal ground level connected to GI strip of size 25 x 4 mm as earth lead by means of bolts, check nuts and washers of galvanized iron or steel connected to earth test point including earth strip from earth electrode to test point , GI pipe 40mm dia light grade as protection pipe and 20mm dia GI pipe light grade for watering pipe of required length including charcoal dust, common salt, excavation and earth work earth pit with PCC 1:3:6 type CI (using 20 mm graded stone aggregate, precast RCC cover 40 mm thickness reinforced with 3 Nos TMT bars 8mm dia both ways, funnel with wire mesh, testing and rest as shown in electrical plate No-3 of SSR-I including complete all as specified and directed. Note: Earthing strip and protection pipe upto 7.5 meter length shall be deemed to be included in the quoted unit rate . Earthing strip beyond 7.5 meter shall be measured and paid separately. (Chiller unit (03), Main Control panel (02), AHU (02x 02), HWG (02), Humidifer (02)

M & L earthing complete with Galvanized steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.25 Mtr deep below normal ground level) with top edge of the plate not less then 1.5 Mtr below normal ground level connected to GI earth lead wire 4 mm dia by means of bolts,nuts, check nuts and washers of galvanized iron or steel incl excavation and earth work,PCC 1:3:6 type C-1 chamber with RCC cover 1:2:4 type B0 40mm thick, reinforced with 8 mm dia TMT bar, 3 Nos both way,15mm dia light grade GI protection pipe, funnel with wire mesh watering GI pipe of 20mm dia light grade and lugs including charcoal dust, common salt, and testing etc. all as shown in electrical plate No.5 of SSR Part I of 2009. Note: Earthing lead and protection pipe upto 7.5 meter length shall be deemed to be included in the quoted unit rate . Earthing strip beyond 7.5 meter shall be measured and paid separately

S & F GI earth strip 25 mm x 4 mm below ground, in 40 mm GI pipe wherever required and on surface or in recess for connections etc.

Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 4mm dia galvanised iron or steel wire

PIPING-CHILLED WATER & HOT WATER SYSTEM Supply, laying, testing and commissioning of the following nominal sizes of chilled water and hot water plumbing pipes MS ‘C’ CLASS as per IS: 1239, with necessary clamps, vibration isolators and fitting like valves, flanges, union etc. but excluding valves, strainers, gauges etc.) cut to required lengths and welded at joints and inclusive of accessories like elbows, tees, reducers, sockets etc. including insulating with 19 mm (for all pipes) and 13mm (for drain pipe) thick closed cell chemically cross linked fire retardant polyethylene foam insulation of density 30 Kg/cum. The thermal conductivity of the material should not exceed 0.035 W/Mk at an average temp of 40 deg C,covered with aluminium sheet cladding 24 gauge complete with application with rubber based adhesive Pidilite SR 998 y, all as specified and repairing damage to building etc.and conforming to the specified specification,

125 mm dia

100 mm dia

80 mm dia

65 mm dia

50 mm dia

Supply, installation, testing and commissioning of wafer type PN 1.6 rated short pattern CI butterfly valve having Gr. FG-200 CI body conforming to IS 210: 2009, seat having EPDM rubber lining, CF 8 stainless steel disc, AISI- 410 stainless steel stem, 2.4 MPa body test pressure & 1.6 MPa seat test pressure and standard flange end conforming to BS 10 Table D/E & ANSI B 16.1 CI- 125, duly insulated complete all as specified and directed by the engineer-in-charge. The valves shall be of integral moulded design and of following sizes

125 mm dia valves

100 mm dia Valves

80 mm dia Valves

65 mm dia Valves

50 mm dia Valves

Material & Labour for PN 1.6 rated precise balancing double regulation type cast iron (CI) Balancing valve of having CI Gr. FG-200 body, EPDM / nitrile seal, stainless steel disc, ASTM A-276, Gr SS-410 stem, EPDM / nitrile bush, MS gland nut, ASTM A 276 spindle, CI bonnet, SS304 baancing nut, MS bonnet cap, CI hand wheel, MS plug, stainless steel fastener, flanged end connection, etc., and duly insulated with elastomeric thermal insulation with necessary accessories complete all as specified and directed by the engineer-in-charge. complete all as specified, of following sizes:-

100 mm dia Valves

80 mm dia Valves

50 mm dia Valves

Supply, fixing, testing and commissioning in position of ‘Check Valves PB 16, bolted bonnet type, durable fusion bonded epoxy coated,comply with BS 5153/EN 12334, flange drilled , working pressure 16 bar including suitable flange for connection into pipe line compledte all as specified and directed.

80 mm dia Valves.

65 mm dia Valves.

50 mm dia Valves.

Supply, fixing, testing and commissioning in position Gun metal Gate/glove Valves 32 mm dia heavy duty, butterfly handle including fixing arrnagment in MS pipe by making suitable size hole complete all as specified and directed.

Material & Labour for PN 1.6 rated air vent valve having brass body, cover, adopter, disc assembly & cap, stainless steel strainer, plastic float and 20 mm screwed threaded ends suitable for maximum operating temperature 100 °C installed on all high points in the water piping system to automatically remove the trapped air with necessary accessories all complete as specified and directed by the engineer-in-charge.

Material & Labour for CL-125 two-piece design cast iron (CI) straight pattern ball valve of not less than 20 mm NB, conforming to IS 9890: 1981 and having FG 200 cast iron body conforming to IS 210: 2009, AISI 410 stem, stainless steel AISI 304 ball, renewable PTFE seat & gland packing and screwed female BSP parallel threaded ends conforming to BS 21 with necessary accessories all complete as specified and directed by the engineer-in-charge.

Supply & Fixing for 4" bourdon tube pressure gauge conforming to EN 837-1, having copper alloy process connection & pressure element, plastic black pointer & case, plastic crystal-clear window, snap-fitted in case, accuracy class 2.5, scale range 0- 25 bar with necessary accessories all complete as specified and directed by the engineer-in-charge.

Supply & Fixing for 6" dual scale (°F / °C), lower mount (radial), bimetal thermometer having 0.5 NPT process connection, Grade A accuracy class as per ASME B-40.200, stem diameter 6.35 mm, laminated safety glass window, stainless steel 304 case, steam, process connection & joint, aluminium dial & pointer, IP67 protection, scale range 0- 60 °C with necessary accessories all complete as specified and directed by the engineer-in-charge.

Providing and fixing in position the water flow switches as per OEM design and specifications for the Chilled / Hot water water circuit complete with fitttings all as specified and directed.

Supply, installation, testing and commissioning of PN 16 rated 100 mm NB 3-way pressure independent control valve (PICV) with sensor operated flow rate or power control and energy monitoring function, flange end connections, etc. for modulating water-side control of air handling units along with valve actuator complete all as specified and directed by the engineer-in-charge. The valve shall conform to the following technical specification:- [i] Material (a) Valve body: EN-GJL-250 (b) Flow measuring pipe: EN-GJL-250 with protective paint (c) Closing element: Stainless steel AISI 316 (d) Spindle: Stainless steel AISI 304 (e) Spindle seal: EPDM (f) Seat: PTFE, O-ring Viton (g) Imersion sleeve: Stainless steel AISI 316 [ii] Electrical Data (a) Nominal Voltage: AC / DC 24 V (b) Nominal Voltage frequency: 50 Hz (c) Power consumption in operation: ≤ 7 W (d) Power consumption in rest position: ≤ 5 W [iii] Flow Measurement (a) Measuring principle: Ultrasonic volumetric flow measurement (b) Measuring accuracy flow: ±2% NOTES:- [i] The 3-way Control valve shall be pre-calibrated to the given maximum flow rate. [ii] Closing off differential pressure of actuator connected with 3-way diverting globe valve shall not be less than the pump head.

Supply,installation,testing and commissioning of proportional cooling only thermostats for the Air Handling Units complete with required controls wiring/installation kit etc. As per drawings and specifications.

Supplying, fixing, testing & commissioning of expansion below of PN-16 pressure rating for chilled /hot water across pump and chiller, AHU for resisting the unit vibration to the main pipe Line.

125 mm dia valves

100 mm dia Valves

65 mm dia Valves

50/40 mm dia Valves

Supply, fixing, testing and commissioning of condenser water pipes of MS class ‘C’ of following sizes and material along with necessary clamps, vibration isolators and fittings such as bends, tees etc but excluding strainer and gauges etc adequately supported on rigid supports/buried in ground including excavation & return filling etc as per specifications and as required

125 mm dia

100 mm dia

Supply, installation, testing and commissioning of cast steel bolted cover Y-type strainer of following sizes with CCS body conforming to ASTM A- 216 Gr. WCB, AISI 304 screen with 1.2 mm diameter perforation, 40 kg/cm2 body test pressure & 20 kg/cm2 maximum working pressure and standard flange end conforming to BS 10 Table F / Class-150, duly insulated complete all as specified and directed. Notes: [i] Insulation shall be measured and paid for separately. complete all as specified of following sizes :

100 mm dia .

80 mm dia .

65 mm dia .

Supply and fixing in position 32 mm dia GI pipes medium grade cut to required lengths and installed with all screwed joints, and providing and fixing in positionincluding necessary fittings vsuch as elbows, tees, reducers etc complete all as specified & directedas per specifications.

Expansion Tank Supply,installation,testing and commissioning of rotational moulded polyethylene expansion tank cylindrical vertical with closed top of size 1000 Ltr complete insulated with FR- XLPE/XPE 19 mm thick of minimum bulk density 28±4Kg/cum covered with vapour barrier and finished with 0.5 mm thick AI cladding and applied with Pidilite SR 998, air vent, pressurisation vessel of required capacity, NRV, drain connection and float valve including quick fill by installing suitable size monoblock pump set and controller including suitable foundation as per OEM instruction complete all as specified and directed.

24 gauge galvanised sheet steel complete all as specified and as directed.

22 gauge galvanised sheet steel complete all as specified and as directed.

20 gauge galvanised sheet steel complete all as specified and as directed.

Supply, fabrication, installation and testing the flexible connections constructed of fire resistant double resin sleeve and Jib opening as required all as per the OEM Instruction

Grilles/ Diffusers. Material & Labour for square / rectangular / round neck with high flow long through jet diffuser of size not less than 300 mm nech diameter or rectangular neck 4-way supply and return air diffuser for fixed, horizontal discharge pattern consisting of an outer frame assembly with a square / rectangular inlet being an integral part thereoff, an inner core assembly consisting of fixed deflection louvers, throw reducing vanes, anodic acrylic paint finish, etc. and tested as per ANSI / ASHRAE standard 170-1991 complete all as specified and directed by the Engineer-in-charge.

Supply, installation, testing and commissioning of high performance air foil class 1A leakage rated GI volume control damper having galvanised steel hat channel frame reinforced with corner braces, galvanised steel airfoil shaped blades (double skin construction) of 14 gauge thicknes, neoprene blade edge seals, flexible metal compressible jamb seals, stainless steel sleeve, linkage concealed in frame, etc. tested as per AMCA Standard 500-D-98 complete all as specified and directed by Engineer-in-charge.

Supply Air / Fresh Air /Return Air / Exhaust Air Grilles Supplying & fixing of powder coated extruded aluminium Supply Air Grills/ Reutrn Air Grills / Fresh Air Grills / Exhaust Air Grills with aluminium volume control dampers as per specification.

Fresh Air Louvers Supplying, installation,testing and commissioning of GI construction fresh air louvers with min.60% free area,bird screen and fresh air filters and painted in baked enamel shade with metallic framework complete as per specification and approved drawings and specifiecation

Exhaust Air Louvers Supplying, Installing,testing and commissioning of powder coated extruded aluminium exhaust air louvers with min.60% free area, with metallic frame work & fixing accessories,to be fixed on external wall to exhaust air from Hanger area to ambient , it shall be suitable for exhausting required air in CFM.Louvers need to be suitable in order avoid rain water entry into basement @15 degree deflection with bird screen complete as per specification approved drawings and schedules.

Exhaust Air system Supply, installation, testing, commissioning of exhaust air system capacity not less than 6500 CFM, double skin with 0.80 mm thick GI Sheet and 0.80 mm thick prepainted GI sheet casing consisting of ,25 mm thick PUF insulation panel, Fan section consist of Centrifugal Fan, backward curved, DIDW, consisting of TEFC motor 415 +/- 10% volts, 3 Phase, 50 Hz, drive arrangement, common frame for fan and motor with metallisk vibration isolator. Fanmotor assembly (as whole) shall be statically & dynamically balanced. casing with inspection window, fire rated double flexible connections on fan mounting arrangement, VCD at outlet belt driven, slide rails etc. Motor shall conforming to efficiency grade IE 3. Complete as per OEM specification and drawing. Fan sections shall be suitable for outdoor duty. Fire retardant & water proof flexible connection between fan outlet & duct shall be made of Silicon coated glass fabric having 250 degree / 2 hour fire rating (Max. fan outlet velocity 10m/sec.). Fans, forward /backward curved, DIDW, shall be licensed to bear the AMCA Air and Sound Certified Ratings Seal. The test standard used shall be ANSI/AMCA 210-85, ANSI/ASHRAE Standard 51-1985 “Laboratory Method of Testing Fans for Rating” and AMCA 300 “Reverberant Room Method for Sound Testing of fans”.including Supporting arrangement as per approved shop drawing and OEM specification. Fan Sound level should not be greater than 70 dBA @ 1 meter from any side.

Material & Labour for CBRI certified 16-gauge GI fire damper ( Control panel actuator, including electrical spring type actuator, remote indication of the fire damper position.) , at least of 120 minutes fire-rating, spring activated on melting of fusible link having melting point 67.13° C complete with smoke detector / thermistor, fusible link etc. and actuator as required for operation, located in the SA / RA ducts, at all fire rated cross overs (shafts, walls, etc.) along with control panel (located in such a way that the reset may easily be done), interlocked with the building management system for the fire detection or HVAC to trip / close in the event of fire / smoke in the respective zone and tested as per UL-555 complete all as specified and directed by the engineer-in-charge. The fire dampers shall meet the following criteriaon:- [i] Bare fire dampers with 400 mm sleeve [ii] Control panel actuator, including electrical spring type actuator, remote indication of the fire damper position [iii] Interconnection wire for the fire detection & alarm system with the AHU and the smoke dampers [iv] Sealing any openings around the sleeve of the fire dampers with approved fire sealant as per the specification & recommandations of the manufacturer.

THERMAL INSULATION Supply, installation, test and commissioning of accoustic insulation insdie the duct with engineered nitrile rubber open cell foam with density 140-180 kg / cum and class - I fire performance and with antimicrobial as per ASTM E 21 using manufacturer's recommended rubber based adhesive in a solvents complete all as specified and directed.

Supply install test and commissioning of thermal insulation of duct with 13 mm thick closed cell chemically cross linked fire retardant polyethylene foam insulation of density 30 Kg/cum. The thermal conductivity of the material should not exceed 0.035 W/Mk at an average temp of 40 deg C,covered with aluminium faced foil complete with application with rubber based adhesive Pidilite SR 998 and 50mm x 3 mm thick self adhesive tape on both longitudinal & transverse joints simultaneously and externally wrapped with wrapped with 3M Fire Barrier Duct Wrap 615+ certified to ISO 6944 (air duct test standard) all as specified.

Supply & Fixing for wall mounted digital temperature cum % RH controller complete with large LCD, English display having operating voltage 240±10% V AC, 50 Hz frequency, ≤ 8 VA power consumption, 0.5 ºC temperature display resolution, 0.1% relative humidity display resolution, IP20 protection, etc. including battery and control wiring in PVC conduit from thermostat / humidistat in return air duct to AHU Room complete as specified and directed by engineer-in-charge

Supply & Fixing for Indoor type wall mounted digital temperature cum %RH meter (Digital Thermo Hygrometer) complete with large LCD, English display having operating with 12/24H Max/Min temperature and humidity memory function range -50°C to 70°C Temperature accuracy 0.5 ºC and Humidity range 10% to 99% RH Humidity accuracy 5% RH Humidity resolution 1% RH Power source 1*AAA (1.5V) battery complete as specified and directed by the engineer-in-charge.

S &F structural rolled mild steel joist, channel, angle, tee or flat section conforming to grade Fe 410-O or Fe 310-O fixed independently, without connecting plates etc. as in nd duct supports including tie bars with screwed etc complete all as specified and directed .

Supply, installation, Testing & commissioning water softening plant considering water softening flow rate of 2 cum/Hrs with inlet hardness given 105 PPM and hardness of outlet will be less than 5 PPM for condenser water circuit complete all as specified and directed by Engineer-in-charge.

Supply, installation, testing & commissioning Automatic condenser cleaning system suitable for conedenser water pipe line of capacity not less than 46 TR for automatic cleaning of shell and tube heat exchangers by propelling a barrage of soft balls through tubes coninuiously as per OEM instruction comprises of balls strainer of suitabel size, collector, local control panel for operating of ACCS, control valve for injection, control valve for collection, booster pump of required capacity, manual valves, cleaning balls and all other material required for functioning of ACCS all as specified and directed. Make - True Max or equivalent.

Material & Labour for drain water pipe of 20 mm NB including necessary fittings viz. flexible connections, bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe in excavated trenches or on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fasteners) with necessary accessories complete all as specified and directed by the engineer-in-charge. NOTES:- [i] The pipe size 150 mm NB & below shall be MS 'C' class as per IS 1239 (Part- 1): 2004 & IS 1239 (Part- 2): 2011. [ii] The pipe size above 150 mm NB shall be welded black steel pipe heavy class as per IS 3589: 2001. [iii] Minimum thickness of MS sheet for pipe size above 150 mm NB and up to 350 mm NB shall be 6.35 mm and it shall be 7 mm for pipe size 400 mm NB

NOTES : (i) The rate shall be inclusive of Designing of Complete AC dully vetted by IIT / NIT for submissiong and approval of Accepting Officer within 01 Months from date of Acceptance (ii) Complete detailed/shop drawing of all pipe network, duct network (Supply/return) for RCC structure with traverse wall, Exahust air system, fresh air system, Layout plan and panel drawing shall be prepared and submitted duly vetted from IIT/NIT for approved of Accepting officer within 01 Months from date of acceptance of contract. (iii) The completion of the work shall be issued in phased manner. Provisional completion of the work shall be issued After physical execution of the work at site complete in all rspect. (iv) The complete central AC Plant schematic / line plan layout shall be approved by the Accepting officer before commncement of work (vi) The Phase -I completion of the work shall be issued after 24 hours Phase-I Test in presence of Engr-in-charge , GE and users Representative. (vii) The Plant shall be operated round the clock by the contractor by providing skilled Refrigeration mechanic in three shift per day including holiday after phase-I Completion of the contract and till the phase-II test/ Final Completion of contract i.e 1 years from date of completion of phase - I and rates quoted by contractor are inclusive of comprehensive maintenance and manning operation of the plant for this period. (viii) The Defect liability period of the contract shall be start after the completion of all phase-I tests )

BRITE INDUSTRIES (BID ID -3498684)

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Pneumatic Engineers Pvt. Ltd. (BID ID -3492367)

somnath engineering corporation (BID ID -3493364)